It’s been more than 30 years since David Chaum launched the ideas that would serve as much of the groundwork for anonymity online. In doing so, he also helped spark the debate that’s endured ever since, over the anarchic freedoms that digital secrecy enables—the conflict between privacy advocates and governments known today as the “crypto wars.”

Now Chaum has returned with his first online privacy invention in more than a decade. And with it, he wants to bring those crypto wars to an end.